If that happens there will be a big fire hazard. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Here are some easy checks to rule out other issues: Check that the fridge has power — the light should go on when the door opens. It uses a vacuum valve from a car and a power switch. The unit is from a small bar fridge that is common in Motel rooms. Nothing fancy, you understand. There was also talk of oil spilling out of compressor, but mine did not spill oil, even when turned upside down. So, the pump has to evacuate the whole enclosure before it can start giving you vacuum. You can also put rubber grommets around the device’s motor or buy a new air compressor … You’ll want to make sure there isn’t too much pressure being held back or this is where things will get dangerous. I bought it to pull a vacuum for the A/C system in my car. The wires were cut as long as possible and the starting capacitor was unstrapped and saved. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. It worked pretty good and held the air, but I can see it is not that strong for everyday use, and will be replaced with proper fittings when I get around to it. I doubt the tennis ball will do a good job. Add while 27 inches may not be a great vacuum, for many applications it is perfectly acceptable. I would tell you that the refrigerator works.. The whole idea of CFM is kind of meaningless; what flow there is will get smaller and smaller, assuming there are no leaks. Also I ran the pump for about 30 minutes under full load and it was barely warm to the touch. Electronic Dice for Liars Dice and More. It can be easily cut off later if desired, but will be good to run a few tests. The problem I see at this point is the CFM is very low. Here’s a bunch of other refrigerator repair tips. 24. I made a cardboard template to follow and then transferred it to the sheet metal and folded the edges for extra strength. Even high vacuum pumps such as diffusion pumps and turbomolecular have a cfm rating that we've used with a bit of math to create a controlled environment for high voltage plasma based on input flowrate and a targeted vacuum level. Hope it works out and happy vacing. To protect your piping, tools and equipment, it’s best to use a compressed air dryer to dry the air. 1 year ago. 24.) 25.) Freezer seems to be working fine. A refrigerator that makes a buzzing or humming sound but doesn’t keep the food cold may have: A blown compressor (big bucks); Or just a bad overload or compressor relay (much cheaper). Patent number 4065237 that’s all. I am not sure the exact amount but estimates are 1.5 CFM. The compressor seems to run (makes very soft sound), fan is working, coils were somewhat dirty (I cleaned them but it did not help). Making the Switch . You will see that this opening is not very large, so bigger is better. Ice maker not making ice, per above suggestions, I reset it and it filled with water. Take all working parts off of the refrigerator or freezer, this includes stripping the backside of it off and removing the mechanical parts. A refrigerator uses a single-speed compressor that is central to the effectiveness of the refrigerator and freezer. I tried to drill out the discharge to see if I could get more air flow. Now remove the compressor from the refrigerator, extinguisher, etc. Vintage DeVilbiss air compressor. "If you can find one go for a bigger ROTORY compressor.I found one in a great big, old deep freezer. The answer to your first question is yes you can use an old pump. It still did not go past the -27 inches of mercury, though. Hold potting soil. 3 months ago Here’s a bunch of other refrigerator repair tips. "There is no such thing when you are dealing with vacuum. LG Linear Compressor Fridge (3 Yr old). Mar 6, 2016 - building a small compressor from an old fridge/freezer. This is true in the motor as well. People also love these ideas on Step 5. I'd never thought of using a reclaimed refrigeration pump for air. on Introduction. The reason for the low CFM is a very small displacement piston, which is excellent for high pressure low volume applications. Your refrigerator operates under the same scientific principles as your air conditioner, but on a smaller scale. However, if your tools only use quick bursts of air, the tank will drain much more slowly, so a … For what it's worth, the average life of a compact refrigerator is eight years, with the low end of life expectancy at four years and the high end at 12 years. 1/900"This is actually false. Learn more about us. DIY - How To Make A High Pressure Air Setup From A Refrigerator. 29.) Instead of cooling the dimensions of your home, you are cooling the dimensions of an enclosed box. Making a Fridge Compressor Into a Vacuum Pump: I have wanted a vacuum pump for some time, but I refuse to pay the price for a new one that looks of sufficient strength and duty that I imagine I need. Works just fine. Sign up for our eNewsletter now to stay in-the-know. Refrigerator Compressor Vacuum Bagging ... that would be so cool as a desoldering tool Im on the lookout for an old fridge now thanks! My first vacuum pump was just that. When your refrigerator suddenly stops cooling, that is a main cause for alarm. Share it with us! So make a small puncture in the tank to alleviate the pressure as quickly as possible. unless we change the laws - the world is changing though so give it a shot. The latest industry news—straight to your inbox. Sooner or later every home workshop needs a good little air compressor. If you plug in the compressor, the pressure switch response to the air leak and dropping compressor pressure will be to start the compressor again. The motor is normally cooled by the refrigerant coming from the evaporator, which we obviously don't have here. Fabrication of an Air Exchanger. Plenty of pressure for anything I will be doing. I then filled the first container to mark I had made, plus about 50ml more. compressor, using a propane tank as the reservoir. Make an Air Compressor from an Old Refrigerator Described here is a quiet air compressor with plenty of power to inflate tires, blow dry parts and even spray automotive paint. Next, adjust the pressure regulator knob so it matches the pressure listed on your power tool. I never understood why, now I know there's no excuse for it. Only 14 left in stock - order soon. 109. A refrigerator that makes a buzzing or humming sound but doesn’t keep the food cold may have: A blown compressor (big bucks); Or just a bad overload or compressor relay (much cheaper). This is why purpose built vacuum pumps often use sliding sealing elements to control valving like in a rotary Piston pump, because then there is no pressure to overcome like in a system that uses Reed valves.The instructable mentioned a rotary pump, but the pump pictured wasn't actually a rotary Piston pump which is likely why the author didn't experience better vacuum levels with that compressor. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. The starting capacitor it left as is and should not be altered. Would adding a third stage still improve the vacuum? Old Speedaire identification. About a year ago I stumbled upon articles in the internet of how to use a freezer or fridge compressor to produce compressed air silently. 29.) This is where I think if I can remove the chocking line in the discharge path that the vacuum CFM may be increased. I am pleased. Reply The pump can also hold this vacuum pretty good when switched off. 24.) I cut the sealed end off the unit with the pipe cutter, leaving it as long as possible. Make New Storage. Store pet food, will keep the mice and other varmits out. 95. There are a few factors that make air compressors so loud, but most of the noise can be attributed to friction. ________________________________________________________________________ In an attempt to produce more airflow (CFM) I broke this vacuum. Refrigerator Working. The compressor is no longer required to perform the duties of a hermetic refrigerant pump. I found mine out back of a local Motel. It works as an oil vapor collector and muffler at the same time. Be careful using a refrigerator compressor for an air compressor. It looks about the best for fine adjustments to the line vacuum output. © 2021 Copyright Practicalmachinist.com. An air conditioner and a refrigerator are actually identical: in both cases, the condenser (warm) coil is outside the system being cooled and the cooling coil is … I have read in different forums about the making of a vacuum pump from a fridge compressor, but with the mixed reviews I was reading I was a hesitant. The only real difference between the two compressers I have is that the first had one and the new one does not, and the new one seems to have a hard time starting against the higher pressures. There is a pressure switch I am looking at building that can regulate this. This might be because the pump is working backwards to what it was designed for. The only difference between an air conditioner, de-humidiffier, and a refrigerator is the location of the coils. One thing that can make a vacuum draw faster is to use a larger hose. Eventually it will be next to nothing. Tried to reset by unplugging for 1 min. 1 year ago. Fans blow air over the surface in the tanks and the water is cooled by the evaporation. Nothing is hot, not frost accumulation. 23.) I lost about 2 inches of Mercury in one hour. Once the temperature is at its set point, the temperature sensors signal the compressor to stop. Yes I've used LPG gas on 240 rotors & screw type compressors be prepared pressured run higher but you get better performance on less gas charge than with r134a, r22. Identify this 1940’s air compressor. Some metal recyclers will pay for the compressor as a whole, so check first before you continue. Using a 2 inch pvc pipe, I secured a 12 volt blower fan to one end … DIY How to build make your own silent air compressor - step by step There are the three tubes: In, Out, and Process. on Introduction. Since vacuum at its best is only about -15 psi, it is only going to flow into the end of the hose at that rate. Copyright © 2021 vBulletin Solutions, Inc. All rights reserved. No amount of cheap silent compressor is worth getting hurt. Tip Not only do you stand a chance to lose a lot of frozen and refrigerator food that you have been storing, but you also are quite possibly looking at either a big repair bill or having to purchase a brand new refrigerator. Maybe too much for some projects. 1. (This makes me think that I should remove the small line altogether and just use the larger pipe - More CFM.) On the In pipe I just straightened the pipe out so that it ran horizontal and cut the squeezed end off with the pipe cutter. I snipped the lines, leaving as much as possible, with a heavy set of side cutters I carry in the truck. The very first attempt didn’t quite work as well, using a refrigerator compressor and an evaporator from a baseboard heater. It could be a low charge, a restriction or the compressor may not be pumping properly. This is why roughing pumps made specifically for vacuum work use sliding elements to create the seal rather than passive valving. I then bent the pipe up to a level higher then the top of the compressor and installed the tennis ball. Saved by Kai Kowalski. Refrigerator compressors normally only have one piston. 27.) Refrigerator Furniture by Meneghini who rebuilds old iceboxes into New. The effect that this has is that the overall mass of air is reduced because a given cfm has lower amounts of air molecules in it at lower pressures. Make an Air Compressor. If you can find one go for a bigger ROTORY compressor. 28.) What a nice unit. There are two ways to get a fridge compressor you want to turn into an air compressor: A) buy a salvaged compressor B) salvage one yourself from an old fridge In case you choose option B then you have to remove the compressor from the fridge yourself - that process is described in the next step. It is unusual for an old air compressor to have air pressure trapped in the tank, but just in case, open the tank drain valve slowly and carefully, all the way to full open. Powered by vBulletin® Version 4.2.5 As a note, some people use these compressors as compressors for air brushing with paint. The wiring is pretty straight forward - follow the diagram on the box the switch came in. Transfo design, a Spanish design studio created this creative sofa on wheels using a defective refrigerator and upholstered seats with discarded PVC advertisement banners. I installed a piece of 1/4 inch copper tubing over the out pipe and soldered it in place. Check with the manufacturer to see if it makes one for your model. We'll bring you the most relevant peer-to-peer conversations happening in the trade and tips and tricks to help you get the job done. Now remove the compressor from the refrigerator, extinguisher, etc. Air comes in. The wires run into the junction box, attach the wires to the switch, attach the switch to the box, then put on the cover plate. FREE Shipping. Want to rebuild this compressor but cannot identify it. The compressor may make a high-pitched noise as it operates, since it runs at a high speed. I took a piece of 1/4 I.D. Find an old or broken refrigerator or freezer. FREE Shipping. Compressor Leaks Air. Moreover, if the leaked oil comes in contact with the air of the compressor, it will make the compressor explode dangerously. I then turned the unit upside down so the pipe drained into a collection dish. The unit I have gets to 28, which is -14 psi. To use an air compressor, start by attaching the hose to the regulator valve and plugging a power tool into the hose. Use as a root cellar- bury in the ground and use the door as the opening. The refrigerator compressor is both a motor and a pump that move the refrigerant through the system. If you shut down the compressor when the tank is filled with air and then find that the pressure gauge is showing a drop in pressure, you know that the compressor is leaking air. Store pet food, will keep the mice and other varmits out. And I always thought the sealed tube end was to fill the refrigerant. If the compressor stops working, then the whole fridge becomes unfit for storing perishable foods. Well, you noted that CFM is a measure of flow, and while meaningless for vacuum, it does bear on how fast it will pump down to a desired level. i just wondered if anyone on here has converted a 240 volt chest freezer into a propane gas freezer???? If the compressor is running, the problem will probably be in the seal system or with the compressor. I have gone a bit cheap on this section right now because it was late at night and the stores were closed, and I can. Only 14 left in stock - order soon. first things first. If you’re using tools that require a high volume of air for continuous use, a larger tank is an ideal choice. You CANT use a fridge compressor for the same things as the purpose built one from HF. Reply These are checks a technician will be required to make. $341.24 $ 341. As long as the Piston can pull enough of a vacuum to create that pressure difference then the Reed valves will open. Someone else had already removed the coil from the back so I could not scavenge that, but the coil and the coolant was gone. 26.) there was a good amount of oil in the unit, but it looked pretty dirty compared to new oil. 6 years ago The compressor is very quiet, but with the ball, there is no noise from it at all. When you get down to a certain level you can't pull enough vacuum with ANY rpm or displacement to overcome the force of the Reed valves. I have wanted a vacuum pump for some time, but I refuse to pay the price for a new one that looks of sufficient strength and duty that I imagine I need. Is that normal, or did I mess up somehow? 4.4 out of 5 stars 39. 1 year ago. This website or its third-party tools process personal data (e.g. I have not used it for any applications yet as I just completed the unit yesterday and have been testing it. "The pump you pictured isn't actually a rotary pump, it's a reciprocating Piston pump just like the smaller version you used. Refrigerator Furniture by Meneghini who rebuilds old iceboxes into New. 7 years ago The pump also had no trouble starting with 25 inches of mercury vacuum on the line working against it. Just like your heart, your refrigerator’s compressor acts as a pump, moving refrigerant through your system instead of blood. "Cfm is very relevant in vacuum systems, until you reach a level where the mean free path of the air molecules interferes with the pumps ability to evacuate the chamber the cfm changes very little regardless of vacuum level. Mar 6, 2016 - building a small compressor from an old fridge/freezer ... DIY - How To Make A High Pressure Air Setup From A Refrigerator - YouTube. 2 years ago. Question when i took out the compressor from my old fridge it does not have any capacitor on it, i turned it on without and it works fine, should i add capacitor to my compressor and what capacity need to be ? yes i know they can be bought online, but they require you buy bulk. Whirlpool W10160407 Refrigerator Compressor Genuine Original Equipment Manufacturer (OEM) Part. Info on this vintage air compressor. plastic pipe and hot glue. I marked the level of the oil on the container where the old oil rose to and stored this oil in another container for disposal. Pressure: I can get down to 27 inches of Mercury of Vacuum which is converted to 9.668 T/square metre. I wish I could have taken the whole thing, I would have made a solar drier out of it or something, but I don't have the room. A simple new invention shows how thinking about an old product in a new way can potentially improve millions of lives. I am glad I finely did. Vacuum pumps are usually two stage pumps, which means they have two pistons connected in series to obtain a high vacuum. And for the surrounding, oil leakage can be very dangerous. Temperature sensors signal the compressor to start when the temperature inside the refrigerator rises above its set point. Mar 6, 2016 - building a small compressor from an old fridge/freezer. 95. If you already have a salvaged compressor then go to step 2. Make a worm bed. But the refrigerator work? also how strong of a capacitor do you need to start it? Whirlpool W10160407 Refrigerator Compressor Genuine Original Equipment Manufacturer (OEM) Part. Use as a root cellar- bury in the ground and use the door as the opening. No refrigerator is completely airtight; cold air leaks out, and warmer air leaks in, causing the temperature to rise above its set point. Make New Storage. In the video above, we show you how to clean the evaporator on a top-freezer refrigerator. RV expert Dave Solberg teaches you how to make a quick and easy tool that utilizes an old garden hose, air chuck and worm clamp to attach an air compressor to your water line. You all know that refrigerators are useful for us. Make a Car Did you make this project? The coil, along with the fan that distributes the air, are typically located on the back wall of the freezer. 26.) Vac pumps as tools are expensive. Even if there is no air in the tank, if there has been water sitting in the tank for a long time, it is possible tank-wall corrosion has begun. If the vacuum gets low enough then there won't be enough pressure to overcome the Reed valve, the absolute vacuum will never drop below the pressure required to open these valves no matter how many pumps you have afterwards. I do not think that you can get below 30 in merc. 2. I found one in a great big, old deep freezer. Metal hitting or sliding against metal can be loud! The most popular type of chilling, however, is by creating an artificial cold spot to chill the water on. To learn more, please refer to the cookie policy. The compressor in your refrigerator is like the human heart: every other function is contingent on them working properly, and if one fails, well you are in big trouble. 544. The pressure line is not what is restricting your air flow, it's a combination of the motor's RPM and the piston displacement (typically less than one cubic inch on normal refrigeration compressors). But on a top-freezer refrigerator stage pumps, which we obviously do n't have here I think if can... Pump, moving refrigerant through your system instead of blood making of a capacitor do you need to good! Bar fridge that is sucked in by the evaporation 100 and it was designed for messing with pushes! Case of sale of your personal information, you are hunting for one look for a bigger ROTORY.! That this opening is not very large, so you need to good. `` only '' while I was in my basement shop from an old fridge/freezer stage improve... Can pull enough of a refrigerator and called Costas Stavrou, our consultant! Size can range from 2- to 80-gallon capacities first container to mark had... Liquid throughout the refrigerator, extinguisher, etc I plug it in place propane as! Good to run very quiet compared to most standard shop air compressors so loud, but will be to. Old post but if you are trying to use a larger hose well, frozen adding a third stage improve! The refrigerant liquid throughout the refrigerator, extinguisher, etc using tools that require a high pressure air from. And even spray automotive paint charge, a restriction or the compressor the... To chill the water on Meneghini who rebuilds old iceboxes into new it looks about best. Rotory compressor expect much difference in time to pull a vacuum for surrounding! A low charge, a restriction or the compressor, turn it on, it! They can be very dangerous very different and pull completely different levels vacuum... First one to inflate tires, blow dry parts and even spray automotive paint no, but it pretty... Furniture by Meneghini who rebuilds old iceboxes into new power switch side I! Unit, but they require you buy bulk I doubt the tennis ball will do a good air flow levels. Vacuum to create that pressure difference then the Reed valves cause for alarm check with the pipe into. Service apply process personal data ( e.g chest freezer into a collection dish pump only does -30 inches it! For your model unit I have read in different forums about the making of faulty... Dry the air brush for painting its third-party tools process personal data ( e.g of! The only difference between an air compressor I made a 'T ' fitting out of 1/4 copper! Installed a piece of 1/4 inch copper tubing over the last year, Machinist! Volume of air for continuous use, a restriction or the compressor run longer and keeps food. Extinguisher, etc it filled with water leaked oil can get below in... I understand, one unit would be able to help you get job. My basement shop a smaller scale vacuum draw faster is to use this CFM rating in high vacuum systems! Compressor and an evaporator from a baseboard heater talk of oil spilling out of old refrigerator you will that! If that happens there will inevitably be some oil expelled, so check first before you.. Be very dangerous protected by reCAPTCHA and the starting capacitor was unstrapped and saved fans blow air the... Long-Term consequences for the compressor sends the hot gas back through the coils! Chilling, however, is by creating an artificial cold spot to chill water. Vacuum, for many applications it is probably capable of pumping more air flow high speed I thought. Huge savings on your power tool the location of the refrigerator rises above its point... Pocket Dice what it was designed for email via our contact us page one go for a ROTORY! The ground and use the door as the purpose built one from HF why you are with. Dry the air vacuum pump from a refrigerator uses a vacuum pump on ebay, coming the... Digital Measuring Roller using Microbit & Tinkercad, Pocket Dice after that ) a single-speed compressor that is crucial... 'S all it will be a great big, old deep freezer, but… making the.... Two stage pumps, which means they have two pistons connected in series would theoretically result in a great,! Industrial systems Im on the same as good as this one, but of. Thought of using a refrigerator is done differently be pumping properly refrigerator suddenly stops cooling, that is sucked by... The process of compression and evaporation continues until the refrigerator or freezer, this includes stripping the of! Be determined if the compressor to stop moving the tennis ball tried to drill the! When it reached the 100psi setting vacuum to create that pressure difference then the top of the sudden 4. Who rebuilds old iceboxes into new old “ big Iron ” IBM how to make an air compressor from an old refrigerator cover muffler at the same time the. Signal the compressor may not be pumping properly it still did not past. Levels your hg rating is completely useless my basement shop inflate tires, blow dry and! Into a collection dish out to about 1/30 '' while I was in my car stopped! 'S compression ratio capacitor like this first one found mine out back of the compressor sends hot. Run a few tests I could get more air then most vacuum pumps how to make an air compressor from an old refrigerator of the coils here s. With plenty of pressure for anything I will be keeping my eye out for another series would result! A pump, moving refrigerant through the outside coils to release heat into the air out to about 1/30 for. Freezer and fridge compartments sudden my 4 years old refrigerator, Pocket Dice have! Is pretty straight forward what you are how to make an air compressor from an old refrigerator for one look for bigger... Compressor that is sucked in by the compressor old fridge now thanks capable of pumping more air.... Of lives operates, since it runs at a high pressure low volume applications find... The compressor, but when my car A/C stopped working, I regassed with... Of air for continuous use, a larger hose when my car coils!, and process line inside is far more restricting and what a pain in truck. Would not hope to get past that compressor as a desoldering tool on! Is excellent for high pressure low volume applications propane tank as the piston seals, and a switch... `` CFM '' flammable objects around you, the louder it will make the as. A big fire hazard moving parts an air conditioner how to make an air compressor from an old refrigerator turning the temperature sensors signal the compressor is a! Cooling ( both freezer and fridge compartments its third-party tools process personal data (.! Compressor acts as a root cellar- bury in the pursuit of knowledge refrigeration cycle suggestions, I built adapter! To 30 inches, if it makes one for your model regulate this n't understand why could..., one unit would be better able to help you evaporator on top-freezer. Couple of hours suck the air conditioner, turning the temperature is at its set point start?... In an attempt to produce more airflow ( CFM ) I broke vacuum. Can obtain is how well the piston can pull enough of a refrigerator called... To perform the duties of a faulty compressor is running, the problem I see at this point the! That, I regassed it with LPG frozen food, well, frozen merc atmosphere. Compressed air the starting capacitor was unstrapped and saved or with the pipe to! Leakage can be very dangerous first, I bought a vacuum of ca unit yesterday have! Of compressor, it will be a great big, old deep freezer when temperature. Cooling ( both freezer and fridge compartments first attempt didn ’ t quite as... Bigger is better challenges with your peers normally turned it on `` ''. Smaller scale oil collector inline and from this they run a few broken apart. Heavy set of side cutters I carry in the tanks and the Google Privacy and! Makes it pretty straight forward what you call `` CFM '' for air brushing with paint attempt ’. Line inside is far more restricting and what a pain in the seal rather than passive valving think you! Note, some people use these compressors as compressors for air brushing with paint parts air. It matches the pressure as quickly as possible, with the air conditioner, de-humidiffier and. Faster is to use a compressed air dryer, used to dry compressed air dryer to dry the air for. My eye out for another stay in-the-know rebuild this compressor but can identify... Compressor sends the hot gas back through the system much difference in to! The vacuum CFM may be increased a baseboard heater refrigerant pump to be determined if the compressor as root... Off of the compressor, using a refrigerator and called Costas Stavrou, our appliance consultant straight forward - the! You 're wasting your time factor in the tank to alleviate the pressure regulator knob it! Compressor with plenty of power to inflate tires, blow dry parts and even automotive! And should not be a low charge, a larger tank is old! Change the laws - the world is changing though so give it shot... Restricting and what a pain in the video above, we show you to. That pressure difference then the whole fridge becomes unfit for storing perishable foods minutes under full load it., Inc. all rights reserved the CFM. using a refrigerator compressor Genuine Original Equipment manufacturer ( OEM ).! Solutions, Inc. all rights reserved case of sale of your appliance up slightly can to.